Matthias brock



(N0 Modem M. BROOK.

MACHINE FOR SHAPING 00MB TAOK'STRIPS. No. 329,009. Patented 001;. 27, 1885. 5 :1. W

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PATENT OFFICE.

MATTHIAS BROOK, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE DIUKAY & COPELAND LASTING MACHINE COMPANY, OF PORTLAND, llIAINl l.

MACHINE FOR SHAPING COMB TACK-STRIPS.

SPECIFICATION forming part of Letters Patent No. 329,009, dated October 27, 1885.

Application filed August 11, 1885. Scrinl'No. 175,743. (No model.)

To all whom it may concern.-

Be it known that I, Miyr'rnriis BROOK, of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Apparatus for Shaping and indenting the Heads and Connectingells of Comb Tack- Strips, of which the following description, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

This invention has for its object to indent or shape the head-forming flange and web of a comb tack-strip to produce heads of substantially uniform size and contour.

In accordance with my invention, a flanged strip of metal, provided with teeth is passed between two disks or wheels having wedgeshaped punches, which act to indent the opposite sides of the web connecting the shanks, the indentations being in line with the spaces between the shanks of the tacks, the flanged part or top of the web being indented transversely by a punch, the disks or wheels acting to feed the strip through the machine intermittingly.

My invention consists, essentially, in the combination, in a comb tack-strip machine, of two rotating disks or wheels between which the strip is fed or carried, the said wheels having punches to cut into and indent the sides of the web below its flanged part or top, which is to form the head,and which is struck by the driver of the machine employed to drive the tacks. In connection with the above I employ a vertically-moving punch,which acts to cut into or indent transversely that part of the web which constitutes the head, and is acted upon by the driver that drives the separate tacks, such cutting or indenting of the web and flanged part making it easy to separate the tacks singly from the comb-strip.

Figure 1,in front elevation,shows a machine embodying my invention; Fig. 2, a left-hand end elevation of Fig. 1; Fig. 3, a top or plan view of Fig. 2 below theline was, the cap-plate and part of one of the indenting wheels or disks being broken out; Fig. 4, a side elevation of one of the disks or wheels removed from the machine; Fig. 5, a crosssection of Fig. 4:; Fig. 6, side, top, and end views of one of the web-indenting punches removed; Fig. 7, a cross-section of a piece of comb tack-strip;

Fig. 8, a top view of Fig. 7, and a section thereof in the line so a.

The frame-work A, of suitable shape to sustain the working parts, has mounted in it the main shaft A, provided with usual fast and loose pulleys, the said shaft also having fast on it two cams or eccentrics, a. a, which are embraced by the yokes a of the sliderods B B, having at their upper ends the cross-head B", to which, by the screw 1), is attached the punch 11, which acts upon and indents transversely the flanged top or headt'orining part of the comb tack-strip. The openings in the yoke a, being considerably larger than the cocentric (t, as shown in Fig. 1, enable the slide bars to be moved vertically in guides in the frame-work.

The bed 0 of the machine has erected on it two studs, 0 0, each of which receives loosely upon it a ratchet-toothed wheel, 0 having at tached to its top a wheel or disk, 0, cut or grooved radially at its periphery to form pockets to receive a series of punches, d, (see Fig. 6, where the said punches are shown re moved,) each punch having a portion of its end near its upper side beveled or pointed, as shown, to cut into and indent the web of the comb-strip, or that part of the comb-strip immediately below the head, and between it and the shanks of the tacks, the punches d d indenting or cutting into the web at each side, as best shown in Fig. 8, nearly separating the said web in line with the spaces between the shanks of the tacks. The wheels c are in practice covered by plates 0, which latter aid in keeping the pn nches in position in the wheels a The slide-rod 13(see Figs. 2 and 3) at a point above the bed Cis cut away, as at 2 2, to form cam-shaped recesses, into which enter rolls at the ends of slides g, normally kept pressed to ward the said cam-shaped recesses by springs 4, the said slides each carrying a pawl, h h, acted upon by a spring, h, the movement of 5 the said slides at each'stroke of the cross-head causing the said pawls to engage the ratchetteeth of the wheels 0 c, and rotate the same and the wheels 0 intermittingly.

Referring to Fig. 7, the indentations marked I00 3 are those produced by the punch I), while in Fig. 8 the indentations 5 in the web 6 are those made by the punches d d.

The comb tack-strip to be operated upon 

